Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS20060011704 A1
Publication typeApplication
Application numberUS 11/174,030
Publication dateJan 19, 2006
Filing dateJul 1, 2005
Priority dateJul 1, 2004
Also published asDE102004031797A1
Publication number11174030, 174030, US 2006/0011704 A1, US 2006/011704 A1, US 20060011704 A1, US 20060011704A1, US 2006011704 A1, US 2006011704A1, US-A1-20060011704, US-A1-2006011704, US2006/0011704A1, US2006/011704A1, US20060011704 A1, US20060011704A1, US2006011704 A1, US2006011704A1
InventorsMartin Brodt, Michael Kirschbaum, Timo Wieland
Original AssigneeMartin Brodt, Michael Kirschbaum, Timo Wieland
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process for producing a deformed, locally reinforced sheet metal component and corresponding component
US 20060011704 A1
Abstract
The process is used to produce a deformed, locally reinforced sheet-metal component (10), in which a metal reinforcing sheet (14) is secured to a metal base sheet (12) by means of a brazed join (16) before or during the deformation process, characterized in that a nickel-based brazing material is used to produce the brazed join (16).
Images(1)
Previous page
Next page
Claims(9)
1. A process for producing a deformed, locally reinforced sheet-metal component (10), comprising:
subjecting the sheet-metal component to a deforming process, and
securing a metal reinforcing sheet (14) to a metal base sheet (12) by means of a brazed join (16) before or during the deformation process,
wherein a nickel-based brazing material is used to produce the brazed join (16).
2. The process according to claim 1, wherein the nickel-based brazing material contains about 14% of chromium, about 10.1% of phosphorous, remainder nickel.
3. The process according to claim 2, wherein the nickel-based brazing material additionally includes trace amounts of silicon, boron, iron and carbon.
4. The process according to claim 1 wherein the melting point of the nickel-based brazing material is approximately 890 C., and the brazing temperature of the nickel-based brazing material is approximately 980 C.
5. The process according to claim 1 wherein the nickel-based brazing material is applied to at least one of the metal base sheet (12) and the metal reinforcing sheet (14) in the form of a paste or by spraying or screen printing.
6. The process according to claim 1 wherein the metal base sheet (12) and the metal reinforcing sheet (14) are produced from one steel.
7. The process according to claim 1 wherein the metal base sheet (12) and the metal reinforcing sheet (14) are produced from different metals.
8. The process according to claim 1 wherein at least one of the metal base sheet (12) and the metal reinforcing sheet (14) are produced from a light metal.
9. A deformed, locally reinforced sheet-metal component (10) produced by subjecting the sheet-metal component to a deforming process, and securing a metal reinforcing sheet (14) to a metal base sheet (12) by means of a brazed join (16) produced by a nickel-based brazing material before or during the deformation process.
Description
    BACKGROUND OF THE INVENTION
  • [0001]
    1. Field of the invention
  • [0002]
    The invention relates to a process for producing a deformed, locally reinforced sheet-metal component, in which a metal reinforcing sheet is secured to a metal base sheet by means of a brazed join before or during the deformation process, in accordance with the preamble of Claim 1.
  • [0003]
    Furthermore, the invention relates to a sheet-metal component in accordance with the preamble of Claim 9.
  • [0004]
    2. Related Art of the Invention
  • [0005]
    Processes and sheet-metal components of the type described in the introduction are known. By way of example, DE 100 49 660 A1 discloses a process for producing locally reinforced deformed sheet-metal parts, in which a metal reinforcing sheet is joined to a metal base sheet by brazing.
  • SUMMARY OF THE INVENTION
  • [0006]
    It is an object of the invention to propose a particularly reliable process for producing a deformed, locally reinforced sheet-metal component.
  • [0007]
    A further object of the invention is to provide a corresponding sheet-metal component.
  • [0008]
    To achieve the object, the invention proposes a process having the features of Claim 1. The process according to the invention is characterized in that a nickel-based brazing material is used to produce the brazed join. A nickel-based brazing material is particularly suitable for brazing copper and copper alloys, nickel and nickel alloys, cobalt and cobalt alloys, any desired steels, including special steels, and some special metals and alloys thereof. This brazing material is particularly suitable for producing a stable join between two metal sheets, so as to form a locally reinforced sheet-metal component which is subjected to a deformation process after the brazed join has been produced. This is the “patchwork technique” which is known per se and according to which a metal reinforcing sheet is secured to a metal base sheet, for example by means of a brazed join, it then being possible for the locally reinforced sheet-metal component to be deformed by means of a suitable deformation tool. The stability of this brazed join using a nickel-based brazing material makes it possible to carry out a correct deformation process on the corresponding locally reinforced or “patched” sheet-metal component.
  • [0009]
    According to a preferred variant embodiment, the nickel-based brazing material contains 14% of chromium, 10.1% of phosphorous, remainder nickel. If appropriate, the nickel-based brazing material may additionally include trace amounts of silicon, boron, iron and carbon. In this case, the percentages mentioned may vary by +/−10%. A nickel-based brazing material of this type has proven particularly suitable for joining metal sheets so as to form a locally reinforced sheet-metal component which subsequently has to be subjected to a deformation process.
  • [0010]
    The melting point of the nickel-based brazing material is preferably approximately 890 C., and the brazing temperature of the nickel-based brazing material is preferably approximately 980 C. Therefore, during suitable thermal deformation of the metal sheets which are to be joined (metal base sheet, metal reinforcing sheet) at a deformation temperature which is higher than the melting point of the nickel-based brazing material, it is possible to produce a stable brazed join between these metal sheets and if appropriate also sufficient corrosion protection for the sheet-metal component. In a variant embodiment of this type, therefore, the production of the brazed join between the two metal sheets and the process of deforming the two metal sheets would be realized during a single manufacturing process step.
  • [0011]
    The nickel-based brazing material can be applied to the metal base sheet and/or to the metal reinforcing sheet in the form of a paste or by spraying or screen printing. The determination of a suitable embodiment depends, inter alia, on the sheet-metal materials and/or the surface condition thereof.
  • [0012]
    The metal base sheet and the metal reinforcing sheet can be produced from one steel or from different, if appropriate other materials. Therefore, the metal base sheet and/or the metal reinforcing sheet may also be produced from a light metal. This means that the nickel-based brazing material is versatile for use as part of the “patchwork technique”, satisfying the joining and/or deformation demands imposed in each case.
  • [0013]
    Furthermore, the object is achieved by a sheet-metal component having the features of Claim 9. The sheet-metal component may in particular be a bodywork component for a vehicle body. On account of the quality of join which can be reliably and reproducibly achieved, the nickel-based brazing material is particularly suitable for use in series production of locally reinforced sheet-metal components.
  • [0014]
    Further advantages of the invention will emerge from the description.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0015]
    The invention is explained in more detail on the basis of a preferred exemplary embodiment and with reference to a diagrammatic drawing, in which:
  • [0016]
    FIG. 1 shows a diagrammatic perspective view of a locally reinforced sheet-metal component prior to a deformation process which is to be carried out, and
  • [0017]
    FIG. 2 shows a diagrammatic sectional illustration on section line II-II through the sheet-metal component illustrated in FIG. 1.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0018]
    FIG. 1 shows a diagrammatic perspective illustration of a locally reinforced sheet-metal component 10 which includes a metal base sheet 12 and a metal reinforcing sheet 14. The metal reinforcing sheet 14 is secured to the metal base sheet 12 by means of a brazed join 16; the brazed join 16 is also illustrated in the diagrammatic sectional illustration presented in FIG. 2. In the embodiment illustrated, the brazed join 16 preferably extends along a continuous edge region 18 of the metal reinforcing sheet 14.
  • [0019]
    A nickel-based brazing material, which preferably contains 14% of chromium, 10.1% of phosphorous, remainder nickel, as well as trace amounts of silicon, boron, iron and carbon, is used to produce the brazed join 16.
  • [0020]
    The locally reinforced sheet-metal component 10 involves what is known as the “patchwork technique”, which is known per se. The novel use of a nickel-based brazing material in the “patchwork technique” allows the production of a particularly stable join between the metal base sheet 12 and the metal reinforcing sheet 14, and the sheet-metal component 10 which is thereby obtained can then be subjected to a deformation process by means of a suitable deformation tool. If appropriate, the solder join may also be formed during the deformation process rather than before the deformation process; in this case, the deformation process must be a suitable thermal deformation process involving a sufficiently high deformation temperature.
  • [0021]
    The metal base sheet 12 and the metal reinforcing sheet 14 may consist of the same material or of different materials. In particular, the metal base sheet 12 and metal reinforcing sheet 12 may consist of steel or of other metals (for example light metals).
  • [0022]
    The brazing process using the nickel-based brazing material is carried out in particular in vacuo or in a shielding gas atmosphere.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2225868 *Dec 21, 1938Dec 24, 1940Int Nickel CoCompound metal stock
US4900638 *Mar 14, 1988Feb 13, 1990Vacuumschmelze GmbhNickel-base solder for high-temperature solder joints
US5961028 *Nov 18, 1996Oct 5, 1999Schmitz & Brill GmbhSystem for joining thin-walled steel parts
US20020069506 *Oct 9, 2001Jun 13, 2002Martin BrodtMethod and apparatus for the production of locally reinforced sheet-metal mouldings and products made thereby
US20020119338 *Jun 29, 1999Aug 29, 2002Wayne Charles HaszTubine engine component having wear coating and method for coating a turbine engine component
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8214746Mar 15, 2007Jul 3, 2012Accenture Global Services LimitedEstablishment of message context in a collaboration system
US9349116Nov 4, 2011May 24, 2016Accenture Global Services LimitedEstablishment of message context in a collaboration system
US20080229213 *Mar 15, 2007Sep 18, 2008Accenture Global Services GmbhEstablishment of message context in a collaboration system
US20080229214 *Mar 15, 2007Sep 18, 2008Accenture Global Services GmbhActivity reporting in a collaboration system
WO2013068700A1 *Nov 9, 2012May 16, 2013AircelleSetup for assembling a panel by brazing
Classifications
U.S. Classification228/101
International ClassificationA47J36/02
Cooperative ClassificationB23K35/304, B23K1/19, B21D35/007
European ClassificationB21D35/00B4D, B23K1/19, B23K35/30F2
Legal Events
DateCodeEventDescription
Oct 28, 2005ASAssignment
Owner name: DAIMLERCHRYSLER AG, GERMANY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRODT, MARTIN;KIRSCHBAUM, MICHAEL;WIELAND, TIMO;REEL/FRAME:017178/0978
Effective date: 20050824
Jun 5, 2008ASAssignment
Owner name: DAIMLER AG, GERMANY
Free format text: CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:021053/0466
Effective date: 20071019